replacing the for loops Please

count = 1;

    for n = 2: 97
        for m = 2:length(time)    
            for i=3:numApRH 
                for j=2:numRawRH 
                    for p = 2:numMapPT

                                        PT_load(count, 1) = date=ap{m,1};
                                        PT_load(count, 2) = t=ap{n,2};;

                                        PT_load(count, 3) = raw{j,1};
                                        PT_load(count, 4) = raw{j,3}*ap{m,i};
                                        PT_load(count, 5) = map{p,32};
                                        PT_load(count, 6) = map{p,33};

                                        count = count + 1;

                               end

                            end
                        end
                    end
                end
            end
        end
  end

[Jan]

You forgot to ask a question.

Answer 1

[Jan]

If you want to increase the speed, care for pre-allocating PT_load.

Then avoid repeated work inside the loops:

count = 0;
PT_load = zeros(96 * (length(time) - 1) * (numApRH - 2) * ...
                (numRawRH - 1) * (numMapPT - 1), 6);
q = zeros(1,6);
for n = 2: 97
  q(2) = ap{n,2};
  for m = 2:length(time)
    q(1) = ap{m,1};
    for i = 3:numApRH
      ap_mi = ap{m,i};    
      for j = 2:numRawRH 
        q(3) = raw{j,1};
        q(4) = raw{j,3} * ap_mi;
        for p = 2:numMapPT
          % ??? PT_load(count, 1) = date=ap{m,1}; ???
          % Where does the "date =" come from? It is invalid syntax!
          % ??? PT_load(count, 2) = t=ap{n,2};;  ???
          % Same for "t=" ???
          q(5) = map{p,32};
          q(6) = map{p,33};

            count = count + 1;
            PT_load(count, :) = q;
          end
        end
      end
    end
  end

Ups: There are 3 "end" too much in the code. Please post working code only.

Now compare the speed and decide, if this is still the bottleneck of your code.